thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Error("EOF while parsing a value", line: 1, column: 0)', src/libcore/result.rs:997:5
stack backtrace:
test states::download::test::download_has_transition_callback_trait ... ok
   0:     0x55cb79e4a483 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::he292500cb069592b
                               at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
   1:     0x55cb79e451b8 - std::sys_common::backtrace::_print::h0a244112d948cad7
                               at src/libstd/sys_common/backtrace.rs:70
   2:     0x55cb79e48252 - std::panicking::default_hook::{{closure}}::hb199339b212075e6
                               at src/libstd/sys_common/backtrace.rs:58
                               at src/libstd/panicking.rs:200
   3:     0x55cb79e47fc4 - std::panicking::default_hook::h0f5d79d3aeb5cebe
                               at src/libstd/panicking.rs:215
   4:     0x55cb79e48960 - std::panicking::rust_panic_with_hook::hebcac80ec729c98d
                               at src/libstd/panicking.rs:478
   5:     0x55cb79e484e1 - std::panicking::continue_panic_fmt::h83729debd9444082
                               at src/libstd/panicking.rs:385
   6:     0x55cb79e483c5 - rust_begin_unwind
                               at src/libstd/panicking.rs:312
   7:     0x55cb79e65b2c - core::panicking::panic_fmt::hc3bc1d4b55face00
                               at src/libcore/panicking.rs:85
   8:     0x55cb79637365 - core::result::unwrap_failed::h5f7b56502d8e7619
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/macros.rs:16
   9:     0x55cb796354d5 - <core::result::Result<T, E>>::unwrap::h30bf3792771bba7b
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/result.rs:798
  10:     0x55cb7962e058 - mockito::Matcher::matches_value::h6b88e003f3f163fd
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/lib.rs:542
  11:     0x55cb7962daf5 - mockito::server::<impl mockito::Mock>::body_matches::hfa524c6f2077ff58
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/server.rs:25
  12:     0x55cb7962db71 - mockito::server::<impl core::cmp::PartialEq<mockito::request::Request> for &'a mut mockito::Mock>::eq::hfe00a18b02575a17
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/server.rs:34
  13:     0x55cb7962d173 - core::cmp::impls::<impl core::cmp::PartialEq<&'b B> for &'a A>::eq::h860d9b6762530b92
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/cmp.rs:1003
  14:     0x55cb7963b24a - mockito::server::handle_match_mock::{{closure}}::h43cd654f00ccbb66
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/server.rs:134
  15:     0x55cb79660850 - core::iter::traits::DoubleEndedIterator::rfind::{{closure}}::h2d6c58c85061bda0
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/iter/traits.rs:635
  16:     0x55cb79625204 - <core::slice::IterMut<'a, T> as core::iter::traits::DoubleEndedIterator>::try_rfold::ha97d61d3f6ae9f27
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/slice/mod.rs:2988
  17:     0x55cb79625897 - core::iter::traits::DoubleEndedIterator::rfind::hd806c94572edc275
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/iter/traits.rs:634
  18:     0x55cb796615dd - <core::iter::Rev<I> as core::iter::iterator::Iterator>::find::h1c9b2002948692d9
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libcore/iter/mod.rs:441
  19:     0x55cb7963adea - mockito::server::handle_match_mock::h9ab341bc060c8b8b
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/server.rs:134
  20:     0x55cb7963ac0a - mockito::server::handle_request::h1be4e3f2b46e1cf4
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/server.rs:126
  21:     0x55cb7963a513 - mockito::server::try_start::{{closure}}::h19e1783d6319ac32
                               at /home/otavio/.cargo/registry/src/github.com-1ecc6299db9ec823/mockito-0.15.0/src/server.rs:110
  22:     0x55cb7964cada - std::sys_common::backtrace::__rust_begin_short_backtrace::h360cdcc582893ddf
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/sys_common/backtrace.rs:135
  23:     0x55cb7965c67d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hc57d6fa74e4f46d3
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/thread/mod.rs:469
  24:     0x55cb7965b3fd - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7de1a177b1a95085
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/panic.rs:309
  25:     0x55cb7965c844 - std::panicking::try::do_call::h1c0328330a706679
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/panicking.rs:297
  26:     0x55cb79e52449 - __rust_maybe_catch_panic
                               at src/libpanic_unwind/lib.rs:92
  27:     0x55cb7965c765 - std::panicking::try::h1d902e6b2af3dd1f
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/panicking.rs:276
  28:     0x55cb7965bbcd - std::panic::catch_unwind::haf4142276f498d7e
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/panic.rs:388
  29:     0x55cb7965c47d - std::thread::Builder::spawn_unchecked::{{closure}}::ha27e096332f07b6c
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/libstd/thread/mod.rs:468
  30:     0x55cb79660e99 - <F as alloc::boxed::FnBox<A>>::call_box::h1270d75b0ae800e1
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/liballoc/boxed.rs:734
  31:     0x55cb79e5180d - std::sys::unix::thread::Thread::new::thread_start::hd9992a1ec79303ca
                               at /rustc/2fadb0a16c8737a45746e95df9138912590ed8ad/src/liballoc/boxed.rs:744
                               at src/libstd/sys_common/thread.rs:14
                               at src/libstd/sys/unix/thread.rs:81
  32:     0x7f046884ea9c - start_thread
  33:     0x7f0468762b22 - clone
  34:                0x0 - <unknown>